helloxz OneNav 1.2.4 class/Api.php Api::upload unrestricted upload

Summaryinfo

A vulnerability identified as problematic has been detected in helloxz OneNav 1.2.4. This affects the function Api::upload of the file class/Api.php. The manipulation leads to unrestricted upload. This vulnerability is uniquely identified as CVE-2026-88621. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in helloxz OneNav 1.2.4 and classified as problematic. This issue affects the function Api::upload of the file class/Api.php. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

OneNav v1.2.4 contains an authenticated arbitrary file deletion vulnerability in the Api::upload() method in class/Api.php. An authenticated administrator can submit a non-HTML upload filename matching an existing file in the application's working directory. The application passes the user-controlled filename to unlink() when rejecting the upload, potentially causing file deletion and denial of service.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-88621 since 09/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are required for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/15/2026). MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

By approaching the search of inurl:class/Api.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• helloxz

Name

• OneNav

Version

• 1.2.4

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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